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Product Detailed Parameters
- Description：MIC PIEZO ANALOG
- Series：BL
- Mfr：Knowles
- Package：Tray
- Type：Piezo
- Output Type：Analog
- Direction：-
- Frequency Range：100 Hz ~ 10 kHz
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Overview
The Knowles BL-27242-000 is a piezoelectric analog microphone designed for audio signal detection. It operates within a frequency range of 100 Hz to 10 kHz, making it suitable for voice and general acoustic monitoring applications. The component utilizes piezo technology to convert sound pressure variations into electrical signals. As an analog output device, it interfaces directly with pre-amplification circuits without requiring internal digital conversion. This model is characterized by its robust construction and reliable performance in standard environmental conditions.
Feature Summary
- Piezoelectric transduction mechanism for acoustic-to-electrical conversion
- Analog output signal generation for direct circuit interfacing
- Frequency response optimized for the 100 Hz to 10 kHz range
Applications
- Voice detection systems
- General acoustic monitoring
- Audio input devices
Procurement Notes
Verify the specific datasheet revision when sourcing, as manufacturing specifications may evolve. Confirm that the analog output characteristics align with your amplifier's input impedance requirements. Ensure the operating environment remains within the component's specified limits to maintain signal integrity and longevity. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity.
Selection Notes
Select this component when a simple, cost-effective analog audio pickup is required. It is appropriate for applications where digital integration is handled externally or unnecessary. Consider the frequency response limitations if high-fidelity audio reproduction above 10 kHz is needed. Evaluate the mechanical mounting constraints to ensure proper acoustic coupling with the sound source.
Part Context
This microphone belongs to Knowles' portfolio of piezoelectric sensors. The brand is recognized for producing precision acoustic components used in various industrial and consumer electronics. The BL series typically denotes specific form factors and performance tiers within their broader microphone lineup, catering to diverse sensing needs.
Replacement Considerations
Consult official substitution guides for equivalent models. Verify that any alternative maintains the same piezoelectric principle and analog output nature. Ensure the replacement matches the original frequency response curve and physical dimensions for seamless integration.
